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C1648M (4/05) 19
Figure 10.
RS-422 Data Communication Wiring
RS-422
DATA SELECTION
RS-422 DATA CONNECTIONS BETWEEN DEVICE A AND FR85081 RECEIVER
1 (TX+) DATA OUT+
2 (TX-) DATA OUT-
3 (RX+) DATA IN+
4 (RX-) DATA IN-
5
6
7
8
GND
RX+
RX-
TX+
TX-
FT85081
TRANSMITTER –
DATA CONNECTOR
RS-422
DATA SELECTION
RS-422 DATA CONNECTIONS BETWEEN DEVICE B AND FT85081 TRANSMITTER
DEVICE B
RS-422
DEVICE A
FR85081
RECEIVER –
DATA CONNECTOR
1 (TX+) DATA OUT+
2 (TX-) DATA OUT-
3 (RX+) DATA IN+
4 (RX-) DATA IN-
5
6
7
8
GND
RX+
RX-
TX+
TX-
RS-422
0
1
2
3
4
5
6
7
8
9
0
1
2
3
4
5
6
7
8
9